1061428643 has 8 divisors (see below), whose sum is σ = 1226035440. Its totient is φ = 908174080.

The previous prime is 1061428639. The next prime is 1061428661. The reversal of 1061428643 is 3468241601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1061428643 - 2² = 1061428639 is a prime.

It is a super-2 number, since 2×1061428643² = 2253261528361642898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1061428843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2837858 + ... + 2838231.

It is an arithmetic number, because the mean of its divisors is an integer number (153254430).

Almost surely, 2^1061428643 is an apocalyptic number.

1061428643 is a deficient number, since it is larger than the sum of its proper divisors (164606797).

1061428643 is a wasteful number, since it uses less digits than its factorization.

1061428643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5676117.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 1061428643 is about 32579.5740150174. The cubic root of 1061428643 is about 1020.0706868224.

The spelling of 1061428643 in words is "one billion, sixty-one million, four hundred twenty-eight thousand, six hundred forty-three".